1st Quarter 2009Electrical switching & drive systems & components
Mechanical engineers often face the task of converting rotational movements into powerful linear movements. The associated development costs can be reduced by using maxon’s modular spindle drives. The GP 22 S and GP 32 S gearheads, specifically adjusted for spindles, are designed to withstand high loads, and the special spindle intake means that customer-specific spindles can be assembled easily, which shortens supply times. Key features of the spindle drives are their robustness and long service life.
There are three different standard spindle types to choose from: metric spindles, trapeze spindles and spherical rotating spindles. The spindles are available in steel or ceramic variations and in any length up to 200 mm. Matching spindle nuts are supplied.
Gearheads, motors, encoders and controllers from maxon’s standard program are used to drive the spindles. Currently modified planetary gearheads are available in diameters of 22 mm and 32 mm. Reduction ratios of 3.7:1 to 1093:1 provide maximum torques of 6 Nm and speeds of up to 1600 rpm. The additional axial bearings of these gearheads can also withstand powerful axial forces from the spindles.
maxon DC or EC motors can be used to drive the system. Compatible encoders, which are critical for accurate positioning, can be fitted to the motors. The EPOS or EPOS P positioning controller, with its wide function range and CANopen connection, is recommended to control the motor-encoder combination.
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